A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 4140-00-937-0016
NSN 5996-01-423-9423
NSN 6645-01-084-9074
NSN 6150-00-904-0359
NSN 5996-00-957-7923
NSN 4140-01-468-0277
NSN 6240-01-126-9167
NSN 2925-01-649-7543
NSN 5835-01-132-5894
NSN 5965-00-139-4870
NSN 5905-01-050-8992
NSN 4140-00-660-8699